[all-commits] [llvm/llvm-project] 953d67: Fix accsessing "PresentModifierLocs" array beyond ...

[jyu2-git via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 953d675c42c254676ca446951bd728abefecf436
      https://github.com/llvm/llvm-project/commit/953d675c42c254676ca446951bd728abefecf436
  Author: jyu2-git <jennifer.yu at intel.com>
  Date:   2023-11-29 (Wed, 29 Nov 2023)

  Changed paths:
    M clang/lib/Sema/SemaOpenMP.cpp
    M clang/test/OpenMP/target_ast_print.cpp

  Log Message:
  -----------
  Fix accsessing "PresentModifierLocs" array beyond its end. (#73579)

Currently PresentModifierLocs defined with size DefaultmapKindNum; where
DefaultmapKindNum = OMPC_DEFAULTMAP_pointer + 1

Before 5.0 variable-category can not be omitted. For the test like
\#pragma omp target map(tofrom: errors) defaultmap(present)

error would be mitted.

After 5.0 that is allowd.

When try to:
PresentModifierLocs[DMC->getDefaultmapKind()] =
              DMC->getDefaultmapModifierLoc();
It is accessed beyond array end.

To fix this using OMPC_DEFAULTMAP_unknow instead OMPC_DEFAULTMAP_poiner.